Agilent Technologies E8285A Manual page 157

b. Set the measurement mode to AC level.
c. Select the CCITT Weighting filter.
d. Set the low-pass filter to 30 kHz.
4. On the Test Set:
a. Press .
Preset
b. Select the CONFIGURE screen.
c. Set the RF Display field to Freq.
d. Set RF Offset to Off.
e. Set RF Output to Dupl.
f. Select the RF GENERATOR screen.
g. Set the RF Gen Freq field to the appropriate RF frequency (based on the
firmware revision; see NOTE above) from the Performance Test Record.
h. Set the Amplitude to -10 dBm.
5. For frequencies up to 1000 MHz and for each line in the Performance Test
Record (PTR) do the following:
a. Set the signal generator (used as an LO for the measuring receiver) to the
LO frequency shown in the PTR.
b. Set the Test Set to the RF frequencies shown in the PTR.
c. Measure the ac level (in mV) on the audio analyzer.
d. Multiply the measured ac levels by 1000 to convert them to FM deviation in
Hz and compare the computed results to the limits shown in the PTR.
The following steps are for measurements to 2 GHz.
6. On the signal generator:
a. Set the frequency to 1500 MHz CW for 1700 MHz, 1800 MHz CW for
2000 MHz.
b. Set the level to +8 dBm or whatever level is suitable for the microwave
converter's LO input.
7. On the measuring receiver:
a. Set the frequency offset mode to enter and enable the LO frequency (27.3
Special).
b. Key in the LO frequency (in MHz) which is 1500 MHz.
8. On the Test Set, for frequencies of 1700 and 2000 MHz, continue on as in step
5.
RF Generator Residual FM Performance Test 4
Performance Tests
157